iMac G5 Intel with iSight

Probably a stupid question but i need to know the specs of this, i have the 17".
Basically, all i need to know is exactly what RAM i can put in there and the max.
Currently it only has 512mb and its not too smooth with PS CS3 etc.

Well, first of all, which is it? a G5 or an Intel iMac? Can't be both

It's the iMac Intel im guessing as it has a core 2 duo.

If you are sure your 17" iMac is a Core 2 Duo and not a Core Duo, this should be your iMac. Check the memory specs there. Also you might check OWC. They will be sure you get the proper ram.

http://www.lowendmac.com/imacs/imac-core2-duo-late-2006.html